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SAS Theorem Geometric Construction Exercise: Proving Triangle Congruence

SAS Theorem Geometric Construction Exercise: Proving Triangle Congruence
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2019-05-10 00:30
TriangleAngleTransformationGeometric Construction
This example demonstrates the application of the SAS theorem in geometric construction, proving triangle congruence through transformational geometry. Key mathematical concepts include triangle congruence criteria, geometric transformations, and angle relationships. Construction involves using GeoGebra commands such as Ray, Rotate, Angle, Point, Polygon, etc. Suitable for middle or high school geometry learners to understand triangle congruence proofs and construction techniques.

GeoGebra Commands & Parameters

  1. Ray(A, B_1) → f
  2. Rotate(B_1, α, A) → B'
  3. Angle(B_1, A, B') → β
  4. Point(f) → B
  5. Ray(A, B') → g
  6. Point(g) → C
  7. Polygon(A, B, C) → poly1, h, i, j
  8. Segment(A, C) → k
  9. Segment(A, B) → l
  10. Circle(A, (0.2 * Min[k, l])) → c
  11. Intersect(c, f) → F,
  12. Intersect(c, k) → G,
  13. CircleSector(A, F, G) → d
  14. Point(xAxis) → H
  15. Vector((a, b)) → u
  16. Translate(A, u) → A'
  17. Translate(C, u) → D'
  18. Segment(A', D') → k'
  19. Translate(A, u) → A'_1
  20. Translate(B, u) → C'
  21. Translate(C, u) → D'_1
  22. Polygon(A'_1, C', D'_1) → poly1', d'_1, a'_1, c'
  23. Segment(D'_1, A'_1) → m
  24. Segment(C', A'_1) → n
  25. Segment(D'_1, C') → p
  26. Circle(A'_1, Radius[c]) → e
  27. Intersect(e, n, 1) → J
  28. Intersect(e, m, 1) → K
  29. CircleSector(A'_1, J, K) → q